SOUND-PRODUCING DEVICES (sound-producing toys A63H 5/00); METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR [2018-01]

NOTES

This subclass covers arrangements for generating mechanical vibrations in fluids.

This subclass covers also the production of sounds which may not be audible to human beings but which are audible to animals.

In this subclass, the following terms are used with the meanings indicated:

"acoustics" and "sound" cover the technical field dealing with mechanical vibrations at all infrasonic -, sonic - and ultrasonic frequencies. However, generation or transmission of mechanical waves, in general, is covered by subclass B06B, subject to the exception specified in Note (1) above.

Methods or devices for protecting against, or for damping, noise or other acoustic waves in general (G10K 11/36 takes precedence) [2018-01]

NOTE

This group does not cover protecting against, or damping of, acoustic waves adapted for particular applications, which are covered by the subclasses for these applications, provided that there is a specific provision for this aspect.